Hard rock band formed in the mid-1970s by guitar virtuoso Ritchie Blackmore after leaving Deep Purple. Initially fronted by singer Ronnie James Dio who eventually left in 1979 to replace Ozzy Osbourne in Black Sabbath. Rainbow incorporated medieval themes and classical-inspired guitar work into heavy metal.

1. a spectrum of colored light appearing in the sky; created by sun shining through rain.
2. a 'member' of the rainbow family of living light; term denoting the activities and philosophies the aforementioned.
3. someone who attends rainbow gatherings frequently.
4. a symbol widely appropriated by members of the gay community.

1. "Look! A rainbow behind the clouds."
2. "Welcome Home is an integral part of rainbow."
3. "This is Cactus' 26th gathering. He's a hardcore rainbow."
4. "My sister totally sports the rainbow."